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IM 01F07A01-02EN

Vortex Flowmeter VY Series

Maintenance Manual

IM 01F07A01-02EN 1st Edition

Contents

1. INTRODUCTION ............................................................................................2

1.1

Using This Instrument Safely ............................................................................. 5

1.2 Warranty ................................................................................................................ 6

HANDLING PRECAUTIONS .........................................................................7

2.1

Checking Model and Specifications

.................................................................. 7

2.2

Transportation and Storage Precautions .......................................................... 8

3. MAINTENANCE .............................................................................................9

3.1

Changing the Orientation of the Transmitter Case and

Sensor Terminal Box ........................................................................................... 9

3.2

Removing and Rotating the Indicator .............................................................. 10

3.3

Removing the Amplifier Unit

............................................................................. 12

3.4

Installing the Amplifier Unit

.............................................................................. 13

3.5

Removing and Installing the Shedder Bar ...................................................... 14

3.6

Replacing the Lightning Protector Module ..................................................... 17

3.7

Calculation Formulas ........................................................................................ 18

Revision Information ........................................................................................... 21

1st Edition: Feb. 2022

Summary of Contents for VY Series

Page 1: ...User s Manual Vortex Flowmeter VY Series Maintenance Manual IM 01F07A01 02EN IM 01F07A01 02EN 1st Edition...

Page 2: ...rage Precautions 8 3 MAINTENANCE 9 3 1 Changing the Orientation of the Transmitter Case and Sensor Terminal Box 9 3 2 Removing and Rotating the Indicator 10 3 3 Removing the Amplifier Unit 12 3 4 Inst...

Page 3: ...those for the standard type under the specified model number break down and do not cover custom made instruments Please note that this manual may not be revised for any specification changes construc...

Page 4: ...follows Functional ground terminal Direct current Handling precaution This is attached to locations where this manual must be referenced to protect personnel safety and devices When handling this ins...

Page 5: ...in accordance with local and national legislation regulations Table 1 1 Related Documents Document title Document No Vortex Flowmeter VY Series GS 01F07A00 01EN FSA130 Magnetic Flowmeter Vortex Flowm...

Page 6: ...ctronic components by for example wearing wrist straps to prevent charging by static electricity and not directly touching electronic components circuits and other components susceptible to static ele...

Page 7: ...resulting from handling operation or storage that violates the intended use and specifications Problems that result from using or performing maintenance on the instrument in a location that does not c...

Page 8: ...ected thoroughly before it is shipped from the factory When this instrument is delivered to the installation site check its external appearance for damage and make sure that all parts for installation...

Page 9: ...ould be as follows The preferred ambient temperature and humidity levels are 25 C and approximately 65 RH Ambient temperature 40 to 85 C Humidity 0 to 100 RH no condensation 3 When storing a vortex fl...

Page 10: ...ormed at the Yokogawa factory The orientation of the transmitter case and sensor terminal box can be changed in 90 degree increments four directions Follow the procedure below to change the orientatio...

Page 11: ...nd adhesion of foreign matter Replace O rings if they are damaged or deformed If there is no lubricant on the O rings apply silicone based grease CAUTION In the case of an explosion protected type ins...

Page 12: ...htening the screws and washers 6 When installing the indicator perform the removal procedure in reverse to return the parts to their original positions then tighten the indicator mounting screws The i...

Page 13: ...oreign matter Replace O rings if they are damaged or deformed If there is no lubricant on the O rings apply silicone based grease Follow the procedure below to remove the amplifier unit 1 Turn the pow...

Page 14: ...amplifier unit mounting guide pins into the mounting holes 3 Lightly press the upper and lower parts of the amplifier unit simultaneously to insert the amplifier unit into the transmitter case Take c...

Page 15: ...ent make sure that no explosive atmosphere conditions are present Before removing the shedder bar stop the flow and remove any remaining fluid When removing or installing the shedder bar pay careful a...

Page 16: ...tention to the sensor cable 3 Remove the shedder bar mounting bolts 2 to 10 bolts and washers then remove the shedder bar fixing block and shedder bar with attention to the sensor cable The instrument...

Page 17: ...Table 3 2 Partially tighten each bolt equally 3 to 4 times until the tightening torque value is reached Read Figure 3 8 for the bolt tightening sequence F1105 ai Upstream Number of bolts 2 Number of...

Page 18: ...49 3 74 3 49 3 VY150 0 VY200 1 69 98 69 VY200 0 69 98 69 VY250 0 157 210 140 VY300 0 157 210 140 VY400 0 160 240 140 1 For SPG stainless steel gasket plated with silver only 2 For ASME JPI Class 150...

Page 19: ...e Flow velocity V V N 1 t 1 KT UKT 4 D2 f Reynolds number Re Re V D f 1 1000 N Number of input pulses pulse t Time corresponding to N sec f Instrument error correction coefficient e Compressible fluid...

Page 20: ...low rate Uk Uk m3 For M mass Uk f U f Uk kg d For user specified units Uk Uk User 3 Mass flow rate calculation for instruments with built in temperature sensor and analog input a Steam In the case of...

Page 21: ...2 T1 T2 2 T2 T1 2 10 2 a2 k1 1 T2 k2 1 T1 T1 2 T2 T2 2 T1 10 6 kx 1 a1 Tx 10 2 a2 Tx 2 10 6 Tx Tx Tn x 1 2 M Mass flow rate Qn Volumetric flow rate at normal conditions Qf Volumetric flow rate at ope...

Page 22: ...21 IM 01F07A01 02EN Revision Information Title Vortex Flowmeter VY Series Maintenance Manual Edition Date Page Revised Item 1st Feb 2022 New publication...

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